Hello sir. There are around 5-6 criterias which we consider when we talk about a pre existing mole or birthmark becoming cancerous or something to be worried about. If you are saying its persistent since last few years, then there is less to worry. But have to keep observing it for change in colour, margins, discharges or any peculiar sensations. If you are finding this mole to be doubtful, due to the bleeding, then get it examined first and if required get a biopsy done. U can send me a picture by online texting if required. Thank u.
Answered2017-12-04 10:24:25
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